1. After you shower, pull your hair up into a loose bun on top of your head, leave it like that until it dries. Let it down, finger comb then hair spray. However, this does not work well if you have thin hair, or straight hair that doesn't have any wave/bend in it.

2. Hair rollers. You can google pictures for them. Use them on damp hair and when dried, style and hairspray. However, it's not really an overnight thing unless you sleep face down (not recommended).